Tire-finishing machine



y 6, 1930- c. H. DESAUTELS Q 1,757,113

TIRE FINISHING MACHINE Filed May 22, 1926 2 Sheets-Sheet l 47 L l fa J 44 48 49 I FIMNM:

May 6,1930. 0. H. DEEAUTELS TIRE'FINISHING MACHINE Filed May 22, 1926 2 Sheets-Sheet 2 INVENTOR. By /-Maw% j further object-is to'provide 125 i Fig. 5 is adeta'il ofjaitire Patented May 6.1930 7 UNI ED srATnsrArENT I o IFICE,

CHARLES m nnsnurnns, or srnmerrnno;

RUBBER company, or I .MASSAGHUSETTS w Application filed-May 22,

This invention relates to a 'machine for finishing pneumatic tires. By finishing is meant the application of the covering'rubber, such as the sidewalls'and chafing stripsj'to 5 the carcass ofthe tire casing.

' The object of the inventionis to provide a machine of thischaracter which will guide and apply sidewall and chafing strips to the tire carcass withrapidity and accuracy. A a machinewhich will automaticallylturn the *chafing' strip aroundand inside of the beadVof theftire. Another object is, to provide a machine for applying-a strip of sidewall stock and stitching the edge of this stock into firmadherene'e with-the underlying tire carcass; Referring to'the drawing s,

- Fig.1is a side'elevation of the-machine,

partly in section; I Fig. 2 is a detail-taken substantially online 22o'fFig.'6;"

Fig. 3 is a detail of a clutch mechanism Fig. 4 is detail of a latchme'chanismf taken along line 44 of Fig. 6;;

casing in process of finishing. illustrating the manner in which the chafingstrip. is turned under the bead, and taken on line 5- +5 of Fig; 6,; f j

Figq6' is a top plan viewof the machine; 7 F Fig. 7 is a detail taken along line 7f7 of ig. 6; 'Q E Q i Fig. 8 isa section taken along line8-81of Fig. 9 is a' Fig.6; V Fig. 10 is a detail of the clutch mechanism, beinga central section of "the parts shown in'F1g.3; o; 1 V Fig. 11 is a fragmentary section of the bead 2 portion of a tire casing, showing the condi tion of the tire at 'a period intermediate of the operations showninFigs. 8 and 9 and Fig. 12 is a similar section of a completed tire. I The machine ismounted' upon'a' base 15 having at the top a slantingtable 16. A "pedestal 17 upon this table carries abearing 18 having a disk 19, the-'uppe'r surface of which is shaped as a fiatcone 20. This disk is connected by gearing 21' withta-shaft 22 section takenalong line ofi i rmE-rInIsHmeMncHm-E 1926; Serial my. 110,978.-

by bevel gearing 23'with a transverse shaft 24'. The. shaftl24sis driven by suitable clutch mechanism so as to beat all times under the Tcontrol ofthe operator. In the form shown theshaft derives-its motion from a'gear 25 loosely mounted upon a sleeve 26 'upon the shaft and meshingwith a pinion 27 (Fig. 1) uponashaft281driven by-a motor or-other cam" member 32 is pivoted to this h1 1band'op1- erates 'upon an abutment 33 at one sideof the splitin the brake band, so that when the cam V V I -MAssncHUsETTs, ASSIGNOB r0 T'HEFISK onlcornn FALLS, MASSACHUSETTS, A CORPORATION on I passingthroughthe pedestal and connected is rocked the brake band-will be forced out;

'wardly into firm engagement with-the inner periphery ofthe hub 29. In order to rock the. cam'm ember it is provided with an arm 34' carrying at one end anadjusting screw 35 strikingu on a cone surface 36,'of a shipper member 3 If this member is forced "to the 'right'as viewedinFig'; 10,jthe*ar'm 34' will be forced downwardly and the brake band cammed outinto contact with'the hub. A shipper lever 38 is carried upon a rock shaft 39 to-whieh is secured an arm 40; A link 41 'joins this arm to a treadle 42 pivoted'upon a shaft 4E3. A spring 44 holds the treadle' inactive so that the machine will notbe driven unless theope'rator rests'his foot upon the "treadle'.

The pedestal 17 carries a br cket-451m f1"andl;6.) to which is pivotedE-at 46 a rockingarmir. "This arm has a cylindrical extension 48 upon which are mounted small roller's 49 serving, together, to make up aroll adapted to press against the outer surface of the tire. The purpose of formin'gthisroll in'gsections is to accommodate the different surface speeds 'with-wh ich different circumferences of the tire-move when the tire is rota'tedabout its axis. *The sections are shaped so as togive an even-contact with the outer circumference of the tire, and with one exception their specific contour need not be discussed. a

When the machin'eis being operated the firewall is clamped, between the roll sections 49 and the disk 19, as shown in Fig. 8.

When Work upon-the tire has been finished the roll sections 49 are moved upwardly by swinging the arm 47 into the position of Fig. 1. In order to swing this arm it is provided with a rod 250 running. loosely inwa -bearin g block -51 pivoted to a bell crank [52. Alsari'n 53 is compressed between the bearing upwardly. Lock-nuts 55ers preferabl a-ttached to the bottom of the rod to give a limit to this motion. To the other arm of thebell crank 52 is pivoted a rod oined to a treadle' 57. By depressing this tieadle the arm 4:7jcan be tilted so as to pness lthe roll -sectionsn49 down against, the tire 58; gwhiehisioarried upon the diskli), T Avyieldin glpressure will be exerted due to the spring. 53. i

In -order 't-o .avoidthe necessity operator holding his .foot upon thetreadle. 57

throughout the operation of the machineg l prefer to supplya lateh mechanism- In the form of latch shownin Fig.4: a latchpiece .59-is-piv0tedat 60 to .thetable 16 and is con- .sta-ntly urgedxtoward the dotted line position of Fig. 4 byia spring 61. The latch}- 7 piece isfshapedflas" atGQto-receive a.pin (SB 0n t e be c ank .52.

*The parts 1 are shown in :dotted- :lines in the position at which the treadle is held down, and the roll-sections -49in ,eontaet with thet re. ,Inorder toreleasethe roll section-s .fI'OiIl;{the tlIfQ the latch-piece is drawn back into the full line position allowing a spring .filto return .thetreadle and consequently the roll sections to their -11PPG1 positiQ SI poststo-aecommodateitires ofdiflerent size.

' v The tireziscentralizedby a pair of rolls69 carried in frame's #70 :whieh-are. mountedupon slides 71 (Fig. 2,) securedby adjustingserews i 723in slots 1T3 formed-riirthe table,

.Atileast one-oi these rolls is preferably made so that it maybe tilted out the normal position at right angles to the ableto facilitate the removal and replacement of atirecasing. The

iframe 0 supporting the. mm in que tion i p voted at T4 ;between blooks75 se'curedjto the slider'iil. rlatch 76, also pivoted to the blocks, mam-al y P s d by aspi i g 17 7 n wh m-6 22 8 in the trameTO. -?I-he 1 tch.may

. b'ede eSeSdbya-r d79 andthe frame tilt d.

into-theposi i n-shownini d tted in s i .liig- 2,- il he. rod preferably: as a utt n;' 11ead 80. ts aipw rd posi ion y 1 a and i hel spring 81 he 82-isiledhverza guide rOll 83fItEig-6") lock; 7 and washerha' secured to the rod 50, so that stair t-i-nies the reare n'd of arnrfifis urged beyond the to a point between the tire and the roll sections 49, the tire being meanwhile clamped between the disk 19 and the roll sections. As

the tire is rotated the coveringrubber will be pressed against the tire. Ifthe'machine isbeing used. to apply. achaiihg-strip or a eom binedlsidewall and chafing stripy it will Operate. automatically to-turn this strip around and under the bead. this case the-strip 82*isof =s-ufiicientwyidth to extend bead 0f the' ti-reyas{best shown in Fig. .8. A flanged pecan-841mg. of

theroil seetions turns this PIOJQCtlDg portionpartially around the bead oi the tire so thatafter' thetire has passed beyond the disk l9'sthis" free edgew-ill project below; the bead, asfindic'ated l at 85, in-Fig, 1 1-. After thetirehasmade a complete revolution this projecting portion 85 will.again meet-the edge of the disk, as indicated in Figs-5 and 9. 1 Since the, disk is of smallerdiameter than the-tire, and isrotating inc-the same direc;v

tionythe edge of the disk hasa motionrat so P the point where it first contaets withlthetire I in a direction almost -=radialyof the. -lat ter. This is apparent in viewing;gthdapparatus in planasinFigwGL FigLashO- sthe man-j ner inkwhichwtheedge of thegdisk -19i-turns' this projecting portion85 under-the bead,

' asomewhat-later stage being-shown .i-nEigJi)- Fig. 12- shows theehjafingstri pcompletely applied. It .will be-observedthat due1t :the conical shape of the .topuofjthe .disk; the

wall will be bent upwardly ariound the disk in an even 'curve and that Tthe disk will give a firm support to the tire wall; duegpartially toaitsshape andi partially to its,{position The disk, therefore} serves to .perform* the {functionsjboth of.- a-.s?upportingdeviee.and.of a. tu ni g a dpre i g-deviceiihritheaedge. of

the chafing. strip. 1 Ehe ,wipin'gj actiongwhi'oh the disk exerts ini-tuckin the i edges. of th chafing strip around the beads is (particularly "terial aroiindrt e head. 1-: i

It is preferable to provide also mechanism fork-attaching firmlyito the tire. carcass-'athe,

outer edge of the material 82 which,'zi n the icase shown, is ;-azcoinbined strip; of sidewall 7 rubber and chafing istrip fabric. 'For;=tliis purpose-a ro'llery86 iota conical shape" is jour- -,eneficia imget ing-aasmoothilay ofthe' ma I halted in a supporting warm-3 87-;secured to the outer end of arm 47. The axis oitheg'roll {"85 .is preferably i set "at ianqangle to a line drawn radially: of -.the.-tir of dihelrolliis .1 pointed inwardly This .con-

and the :Smafllendi struction v.gives-awiping ,HiQtlOIL'OlItWELL'dlY 1 the edge of the covering rubber. The-effect 'of these;combined:afltionsaaistto .berel ofiii edge 88r askshQWn igA-Tanditok press this edgezefirmlyinto adherenceawithitheunden y gitirea arcass. 1

.iflhe'=fniannein of ,1 operating v a aa aiata1 be idea-r fromatheisahove Mliththemollsec- 1 tions 49in their upper position, as in Fig. 1, a tire is inserted restingon the rolls 65 and held laterally by rolls 69. Treadley57 is then depressed to bring the roll sections 49 tightly againstthe wall of the-tire, pinching this between the roll sections and the disk 19. The treadle will be held in this -de-' pressed position by the. latch mechanism shown in Fig. 4. Treadle 42 isthen depressed to cause the disk 19 to rotate, causing the tire and the roll sections .49 to rotate also. The stock 82' is fed between the roll sections 49 and the tire carcass, the machine being stopped if desired near the end'of a complete rotation to permit the stripto be trimmed accurately to length. If achafin strip intended to be folded around the bea is being applied, the rotation of the tire'is then continued for another revolutiom-the disk 19 serving to tuck the'edge of the chafdisk havlng one surface formed as a fiat cone,

ing strip around the bead as described. After the completion of the finishing operation the latch 59 is released and the treadle57 per mitt-ed to rise, this releasing the tire from thegripping actionv of the roll sections 49 and disk 19. The tire may thenbe reversed to operate upon theother side. During the removal and replacement of a tire, one or more of the vertical rolls 69may be tilted as shown in Fig. 2,and the guide 83 is swung to a vertical position. This is permitted by ahinged connection 89 with the arm47': The

. tire 58 has been shown in the drawings as sup orte'd upon anannu larfluid pressure bag. 90, ut the machine isequally applicable to use with tires having nobaginside of them.

Having thus i'described my invention, I claim: 1. A tire finishingmachine comprising a plurality of rollers arranged in one' plane with their axes, radiating from a common point and adapted to supporta tire casing on one side, a plurality of rollers arranged with their axes at right angles to said plane and adapted to contact with the outer periphery of the tire casing, a cone-faced disk mountedwith its axis substantially at right angles to said planein such a position as to extend into the inside of the tire casing and furnish support to one interior wall thereof, and a roller 5 disk andis wiped opposite said disk, said roller having a proecting'flange thereon serving to deflect inwardly a strip of wall of the tire. we r V ,3. A tire finishing machine comprising a rotatable disk adapted to project inside the material applied to the sidetire and furnish support to an interior wall thereof, and slmultaneously to exert a wipmg action from the edge of the bead inwardlyof the'tire.

4. A tire finishing machine comprising a disk having its axis substantially parallel with the axis of the tire, said disk being adaptmeans-for rotatably supporting the disk in a position to project inside. a tire casing with ed to project inside the tire casing and "furone inner-walloflthe tire supported'by the j conical faceof the disk, a roll having its of "the disk and arranged to press" the tire against the disk, and means for rotatingthe 1s. .6. A tire finishing machine comprising a disk having one surface formed as a fiat cone,

means for'rotatably supporting the disk in a axis substantially at rightangles to the axis 1 position is project inside a'itire casing with i one inner Wall of the tire supported by the conical face of the disk, a rollhaving its axis substantiallyat right angles to the axis of the disk and'arranged to press the. tire against the'diskmeans for rotating the disk to feed the tire wall between it and the roll, and

means for turning partially around the head 1 of the tire a strip of covering material, where-' by the strip is projected into the'path of the by the disk 7 onto'the inner surface of the tire- CHARLES H. nEsAUTELs.

bearing upon the outer surface of the tire wall 7 i I opposite said disk.

2. A tire finishing machine comprisinga y plurality of rollers arranged in one plane with their axes radiating from a common 7 point and adapted to support a tire casing on one side, a plurality of rollers arranged with their axes at right angles to said plane and adaptedto contact with the outer periphery of the tire casing, a cone-faceddisk mounted with its axis substantially at right angles to said plane in. such a'position as to extend into the inside of the tire casing and furnish support to onelinterior wall thereof, and a roller bearing upon the outer surface of the tire wall 

